Tks for your advice and link.
Why do you want to leave out the router
Just for curiosity. I'm planning to build a working ISP server with CentOS as OS on an AMD Athlon64 X2 AM2 box. The static broadband shall be used solely by the server. In such a case I don't need the router.
I called ISP about the router in order to learn more about it. The reply was "don't touch it".
I guess 192.168.0.10 to 192.168.0.60 is the DHCP range for your local network, so you can assign another IP address to your Ubuntu system, e.g. 192.168.0.61. This can be done in /etc/network/interfaces.
If I understood your advice correctly. On a 2nd Ubuntu box plugged on the router I have to edit /etc/network/interfaces as follow;
iface eth0 inet static
Remark: ISP preset router as follow:
Suggested Virtual IP: 192.168.0.10 to 192.168.0.60
Default Gateway: 192.168.0.1
DNS Server: xxx.xxx.xxx.xxx
WAN IP: xxx.xxx.xxx.xxx
What about On 3rd Ubuntu box "192.168.0.???" etc. ?
Shall I make change on "NetMask"???